![]() Use an Arduino Nano as the microcontroller, not because it is the best, but because it is the only one that I am familiar with and I don’t have a desire to learn others at the moment.Convert text from a clear source with little noise that is sent at speeds in excess of 20 wpm.Any Morse it hears is displayed as plain text on a display. The decoder to use a microphone as the input.In designing the decoder I wanted to achieve: I’m just documenting the project for fun and maybe inspire others to design their own projects. It’s just a result of the result of the challenge I set myself. This design is unlikely to be the best out there. This is just a hobby and I have not written a lot of code for the Arduino. I’ll say straight up that I am not a developer or have electronics training. Soon I would be hearing messages by spies in exotic locations, possibly in an attic, wearing trench coats and fedoras tapping out their secret messages to their HQ, or more likely not. I had an idea that it may be possible using an interrupt routine and using it to look at the time between triggered interrupts. ![]() Attempting to design one was an opportunity to learn about detecting data patterns, try out some case build ideas I had as well as learn a bit more about Morse Code. It covers radio history, codes, electronics and programming. ![]() I didn’t know how it was achieved but the puzzle of the design continued to percolate away in the back of my mind.Ī Morse code decoder has a lot of elements that interest me. I didn’t see the schematic or the code but I was very impressed that it was possible with relatively few components. Some time ago I saw a YouTube video about a Morse Code decoder that was based on a micro controller. I admire those that are able to send and interpret Morse code messages at high speed. I find the history of Morse code fascinating. Decoding recreated Morse code from the Titanic
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